#include <iostream>
#include <string>

using namespace std;

int main()
{
    int n;
    int a[10][4];
    string s[10];
    int cnt[10] = {};
    int max = -10000100;
    int sub;
    
    cin >> n;
    
    for (int i = 0; i < n; i++) {
        cin >> a[i][0] >> a[i][1] >> a[i][2] >> a[i][3] >> s[i];
    }
    
    for (int i = 0; i < n; i++) {
        if (s[i] == "YES") {
            cnt[a[i][0]]++;
            cnt[a[i][1]]++;
            cnt[a[i][2]]++;
            cnt[a[i][3]]++;
        }
        else {
            cnt[a[i][0]]--;
            cnt[a[i][1]]--;
            cnt[a[i][2]]--;
            cnt[a[i][3]]--;
        }
    }
    
    for (int i = 0; i <= 9; i++) {
        if (cnt[i] > max) {
            max = cnt[i];
            sub = i;
        }

    }
    cout << sub << endl;
}